滑动轴承轴心静平衡位置求解方法研究  

On the Calculation of Journal Static Equilibrium Position of Oil Film Bearings

作　　者：万召 王卫国 龙新华[2] 孟光[2] WAN Zhao;WANG Weiguo;LONG Xinhua;MENG Guang(AECC Commercial Aircraft Engine Co.,Ltd.,Shanghai 200241,China;School of Mechanical and Power Engineering,Shanghai Jiaotong University,Shanghai 200240,China)

机构地区：[1]中国航发商用航空发动机有限责任公司,上海200241 [2]上海交通大学机械与动力工程学院,上海200240

出　　处：《润滑与密封》2019年第7期11-16,共6页Lubrication Engineering

基　　金：国家科技攻关计划项目(2017ZX04010001)

摘　　要：研究滑动轴承Reynolds方程的一维有限元算法及其角向压力分布的离散方法,研究求解外载荷下的轴心静平衡位置的Newton迭代法,针对Newton迭代法在求解轴心静平衡位置时会因初值选取不当而容易发散的问题,提出一种求解任意外载荷下轴心静平衡位置的载荷逼近法。基于该算法,分析某型滑动轴承的油膜力以及油膜刚度、阻尼特性系数,研究外载荷变化时轴心静平衡位置的变化趋势。计算结果表明,所提出的载荷逼近算法,能够有效地从任意初始位置迭代求解得到在任意外载荷下轴心的静平衡位置,较好地解决Newton迭代法求轴心静平衡位置时迭代初值的选取问题。The one dimensional finite element algorithm for Reynolds equation was studied,and discretization of the angular pressure distribution was discussed.Based on the algorithm,the Newton method for the calculation of journal center static equilibrium position was studied,and a load approaching method was proposed in order to solve the divergence problem of Newton method due to unproper initial iteration value.The oil film forces,oil film stiffness and damping were analyzed based on the algorithm.The variation tendency of journal center equilibrium position on the increasing load was studied.The result shows that the load approximation method can obtain the journal equilibrium position under arbitrary external load from arbitrary initial position.

关 键 词：油膜力 静平衡位置 NEWTON迭代法 REYNOLDS方程 

分 类 号：TH212[机械工程—机械制造及自动化] TH213.3